Added a test for the titlediscovery module where it should return None.
Updated the bad hash test to the OpenSubtitles provider. The tests now failes.
Fixed the get_title_by_hash method.
Added a test to opensubtitles checking buggy OS's strings.
The run_test.py now disables the logging for all levels.
Added a test_all test file that executes all the tests.
Some updates to the design of the identifiers extraction.
Changed a debug message to an error one in the requestsmanager.